Denver to Seattle

DENSEA

Fly from Denver to Seattle starting at USD 42 with Frontier Airlines.Best fare available on Aug 27, 2026.Limited seats. Better plans. Book before it's gone.

Denver to Seattle cheapest flights this week

19 Aug
Frontier Airlines
07:15DEN
10:19SEA
DirectUSD 94VIEW DEAL
22 Aug
Frontier Airlines
11:05DEN
14:22SEA
DirectUSD 156VIEW DEAL
26 Aug
Frontier Airlines
07:15DEN
10:19SEA
DirectUSD 157VIEW DEAL
27 Aug
Frontier Airlines
07:15DEN
10:19SEA
DirectUSD 42VIEW DEAL
27 Aug
Frontier Airlines
11:05DEN
14:22SEA
DirectUSD 156VIEW DEAL
2 Sept
Frontier Airlines
07:15DEN
10:19SEA
DirectUSD 130VIEW DEAL
13 Sept
Frontier Airlines
07:45DEN
10:51SEA
DirectUSD 89VIEW DEAL
14 Sept
Frontier Airlines
13:07DEN
16:08SEA
DirectUSD 94VIEW DEAL
1 Oct
Frontier Airlines
13:07DEN
16:08SEA
DirectUSD 50VIEW DEAL
27 Nov
Alaska Airlines
07:00DEN
10:05SEA
DirectUSD 143VIEW DEAL

Denver to Seattle monthly flight fare trend

Aug
from USD 42
Sep
from USD 89
Oct
from USD 50
Nov
from USD 143
Dec
from USD 171
Jan
from USD 159

Airport Details

Origin

Denver

Denver International Airport (DEN)

Denver, DEN
Zone

Denver

Elev

5431 ft

Destination

Seattle

Seattle–Tacoma International Airport (SEA)

Seattle, SEA
Zone

Los Angeles

Elev

433 ft

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